Home / 7,165.19-9,891.32-4,779.15

Finding the Fourth Proportional to 7,165.19, 9,891.32 and 4,779.15

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Solution

The fourth proportional to 7,165.19, 9,891.32 and 4,779.15 is: 6,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.19 : 9,891.32 = 4,779.15 : x
  2. Step 2: Convert to fraction form
    7,165.19/9,891.32 = 4,779.15/x
  3. Step 3: Cross multiply
    7,165.19x = 9,891.32 × 4,779.15
  4. Step 4: Simplify right side
    7,165.19x = 47,272,078.08
  5. Step 5: Solve for x
    x = 47,272,078.08/7,165.19
  6. Step 6: Final answer
    x = 6,597.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.